C313212111133131211331333133313331333133311233133313121111133313331322212131   >>    C31321211113313121133133313331333133313331123313331312111113331333132221213   <<    C313212111133131211331333133313331333133311233133313121111133313331322212133   >>      C313212111133131211331333133313331333133311233133313121111133313331322212132   >>